PHP MySQL错误，无法在XAMPP上注册参数并将其发布到本地服务器

我将学习本教程：

我得到： {“error”：true，“error_msg”：“缺少必需的参数（名称、电子邮件或密码）！” 在POSTMAN和POST上运行register.php时，它在RAW上给出了相同的错误

使用POST方法在POSTMAN上放置：时，我遇到的唯一错误是： {“error”：true，“error_msg”：“缺少必需的参数（名称、电子邮件或密码）！”

并在给定param值时：。 我得到一个致命错误：关于方法prepare（）的布尔值

下面是php脚本的所有文件

Config.php

<?php


$db_host = "localhost";
$db_username = "root";
$db_name = "android_api";

@mysql_connect("$db_host","$db_username") or die("Could not connect to MySQL");
@mysql_select_db("$db_name") or die("Could not find database");

?>

DB_Connect.php

    <?php
class DB_Connect {
    private $conn;

    // Connecting to database
    public function connect() {
        require_once 'include/Config.php';

        // Connecting to mysql database
        //$this->conn = new mysqli($db_host,$db_username,$db_name);
        $this->conn = (@mysql_connect("$db_host","$db_username") or die("Could not connect to MySQL"))&&(@mysql_select_db("$db_name") or die("Could not find database"));


        // return database handler
        return $this->conn;             


    }
}

?>

DB_Functions.php

 <?php

class DB_Functions {

    private $conn;

    // constructor
    function __construct() {
        require_once 'include/DB_Connect.php';
        // connecting to database
        $db = new Db_Connect();
        $this->conn = $db->connect();
    }

    // destructor
    function __destruct() {

    }

    /**
     * Storing new user
     * returns user details
     */
    public function storeUser($name, $email, $password) {
        $uuid = uniqid('', true);
        $hash = $this->hashSSHA($password);
        $encrypted_password = $hash["encrypted"]; // encrypted password
        $salt = $hash["salt"]; // salt

        $stmt = $this->conn->prepare("INSERT INTO users(unique_id, name, email, encrypted_password, salt, created_at) VALUES(?, ?, ?, ?, ?, NOW())");
        $stmt->bind_param("sssss", $uuid, $name, $email, $encrypted_password, $salt);
        $result = $stmt->execute();
        $stmt->close();

        // check for successful store
        if ($result) {
            $stmt = $this->conn->prepare("SELECT * FROM users WHERE email = ?");
            $stmt->bind_param("s", $email);
            $stmt->execute();
            $user = $stmt->get_result()->fetch_assoc();
            $stmt->close();

            return $user;
        } else {
            return false;
        }
    }

    /**
     * Get user by email and password
     */
    public function getUserByEmailAndPassword($email, $password) {

        $stmt = $this->conn->prepare("SELECT * FROM users WHERE email = ?");

        $stmt->bind_param("s", $email);

        if ($stmt->execute()) {
            $user = $stmt->get_result()->fetch_assoc();
            $stmt->close();

            // verifying user password
            $salt = $user['salt'];
            $encrypted_password = $user['encrypted_password'];
            $hash = $this->checkhashSSHA($salt, $password);
            // check for password equality
            if ($encrypted_password == $hash) {
                // user authentication details are correct
                return $user;
            }
        } else {
            return NULL;
        }
    }

    /**
     * Check user is existed or not
     */
    public function isUserExisted($email) {
        $stmt = $this->conn->prepare("SELECT email from users WHERE email = ?");

        $stmt->bind_param("s", $email);

        $stmt->execute();

        $stmt->store_result();

        if ($stmt->num_rows > 0) {
            // user existed 
            $stmt->close();
            return true;
        } else {
            // user not existed
            $stmt->close();
            return false;
        }
    }

    /**
     * Encrypting password
     * @param password
     * returns salt and encrypted password
     */
    public function hashSSHA($password) {

        $salt = sha1(rand());
        $salt = substr($salt, 0, 10);
        $encrypted = base64_encode(sha1($password . $salt, true) . $salt);
        $hash = array("salt" => $salt, "encrypted" => $encrypted);
        return $hash;
    }

    /**
     * Decrypting password
     * @param salt, password
     * returns hash string
     */
    public function checkhashSSHA($salt, $password) {

        $hash = base64_encode(sha1($password . $salt, true) . $salt);

        return $hash;
    }

}

?>

Register.php

<?php

require_once 'include/DB_Functions.php';
$db = new DB_Functions();

// json response array
$response = array("error" => FALSE);

if (isset($_POST['name']) && isset($_POST['email']) && isset($_POST['password'])) {

    // receiving the post params
    $name = $_POST['name'];
    $email = $_POST['email'];
    $password = $_POST['password'];

    // check if user is already existed with the same email
    if ($db->isUserExisted($email)) {
        // user already existed
        $response["error"] = TRUE;
        $response["error_msg"] = "User already existed with " . $email;
        echo json_encode($response);
    } else {
        // create a new user
        $user = $db->storeUser($name, $email, $password);
        if ($user) {
            // user stored successfully
            $response["error"] = FALSE;
            $response["uid"] = $user["unique_id"];
            $response["user"]["name"] = $user["name"];
            $response["user"]["email"] = $user["email"];
            $response["user"]["created_at"] = $user["created_at"];
            $response["user"]["updated_at"] = $user["updated_at"];
            echo json_encode($response);
        } else {
            // user failed to store
            $response["error"] = TRUE;
            $response["error_msg"] = "Unknown error occurred in registration!";
            echo json_encode($response);
        }
    }
} else {
    $response["error"] = TRUE;
    $response["error_msg"] = "Required parameters (name, email or password) is missing!";
    echo json_encode($response);
}
?>

即使传递了所有参数，我仍然会得到以下错误：

---

{“error”：true，“error\u msg”：“缺少必需的参数（名称、电子邮件或密码）！}。

在register.php中尝试

var\u dump（$\u POST）输出是什么？数组（1）{[--WebKitFormBoundaryZ92bfuT2eROzniDs内容配置：_form-data；_name“]=>string（284）”“name”Arnav-----WebKitFormBoundaryZ92bfuT2eROzniDs内容配置：表单数据；name=“email”Arnav。kaushal800@gmail.com----WebKitFormBoundaryZ92bfuT2eROzniDs内容处置：表单数据；名称=”password“password”--WebKitFormBoundaryZ92bfuT2eROzniDs--“}{”error:“error_msg:“缺少所需的参数（名称、电子邮件或密码）！}因此它获取参数、名称、电子邮件和密码，但再次获得相同的错误警告：使用错误抑制YOLO运算符（
@
）隐藏代码中的问题，使调试问题变得更加复杂。这是最后手段，只能在特殊情况下使用。您应该为用户显示一条错误消息，记录一个问题，启动某种重试，或者同时执行所有这些操作。警告：不要使用在PHP7中删除的过时界面。替换类和指南类有助于解释最佳实践。这里没有参数，这在代码中有严重的错误。转义任何和所有用户数据，特别是从
$\u POST
或
$\u GET
转义。